US5944100A - Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well - Google Patents
Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well Download PDFInfo
- Publication number
- US5944100A US5944100A US08/900,633 US90063397A US5944100A US 5944100 A US5944100 A US 5944100A US 90063397 A US90063397 A US 90063397A US 5944100 A US5944100 A US 5944100A
- Authority
- US
- United States
- Prior art keywords
- piston
- bore
- debris
- tool body
- well bore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 2
- 230000003028 elevating effect Effects 0.000 claims 2
- 238000007789 sealing Methods 0.000 claims 2
- 238000005086 pumping Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/06—Fishing for or freeing objects in boreholes or wells using magnetic means
Definitions
- the present invention relates to downhole oil and gas well tools and particularly to an improved junk bailer apparatus that can remove debris and/or "junk” from a well bore. Even more particularly, the present invention relates to an improved "junk” bailer apparatus that features a reciprocating pumping action combined with catch fingers and flexible brush “escalator” members to pump debris into a tool body cavity and then hold the debris or junk within the cavity using the catch fingers.
- magnetic members and multiple sets of fingers define an "escalator” that gradually intakes debris and transports it farther and farther into the tool body cavity. Staging magnets are attached to the body of the tool and are exposed to the lower chamber by a slot in the lower piston. The flexible fingers or brushes move the debris from magnet to magnet in stages, finally reaching a storage area.
- bailers are commercially available for removing debris or junk from an oil and gas well bore. Some of these prior art bailers use a venturi-type pumping arrangement that is often inefficient. Other bailers use hydrostatic pressure to force "junk” or debris into a tool housing when a valve is opened or a disk is ruptured after the tool is placed downhole.
- the tool of my prior U.S. Pat. No. 3,946,819 generally includes a housing with a tubular stem member telescopically received in the housing for relative reciprocal movement between a first terminal position and a second terminal position in response to fluid pressure in the housing.
- the lower portion of the housing is formed to define a downwardly facing hammer and the stem member includes an upwardly facing anvil which is positioned to be struck by the hammer.
- the tool includes a valve assembly that is responsive to predetermined movement of the stem member toward the second terminal position to relieve fluid pressure and permit the stem member to return to the first terminal position. When the valve assembly relieves fluid pressure, the hammer moves into abrupt striking contact with the anvil.
- a jarring or drilling mechanism that may be adapted to provide upward and downward blows.
- the mechanism of the '471 patent includes a housing having opposed axially spaced apart hammer surfaces slidingly mounted within the housing between the anvil surfaces.
- a spring is provided for urging the hammer upwardly.
- the present invention provides an improved bailer apparatus for removing debris from an oil and gas well having a well bore.
- the apparatus includes an elongated, preferably cylindrically-shaped tool body having upper and lower end portions, a cylindrically-shaped sidewall, and an elongated longitudinally extended central flow bore for conveying fluids from the surface area via a coiled tubing unit, work string or the like to the tool body and through the tool body.
- a connector is provided for attaching the upper portion of the tool body to a work string, coiled tubing unit or the like, using a threaded connection, for example.
- the lower end portion of the tool body provides a cavity for holding debris once removed from the well bore.
- An intake portion is positioned at the lower end portion of the tool body for enabling debris to travel from the well bore to the cavity via the intake portion.
- a closure member is positioned at the intake portion for closing the cavity so that debris that enters the cavity is retarded from leaving the cavity via the intake portion.
- closure member is in the form of multiple flexible fingers that move between opened and closed positions.
- a valve and piston arrangement defines a pumping mechanism for sequentially generating a mass of flowing fluid from the exterior of the well bore through the intake portion and into the cavity.
- the pumping arrangement includes a lowermost piston slidably mounted within the bore and movable between upper and lower positions. A movement of the piston from a lower position to the upper position generates a mass of flowing fluid that flows from the well bore just below the intake portion to the cavity for carrying debris therewith.
- the piston is operable to move from the lower position to the upper position with a piston spring.
- the piston is operable to move from the upper position to the lower position with pressurized fluid that is transmitted to the tool body bore using the work string, coil tubing unit or the like.
- a valve member controls the flow of pressurized fluid to the piston thus controlling when the piston is activated to move from the upper position to the lower position.
- valve member When the valve member is not sealed against the piston, pressurized fluid is unable to hold the valve member in the lower position and a piston spring thrusts the piston from the lower position to the upper position.
- the valve member also provides a spring in the form of a compressible valve member spring.
- valve member spring When pressurized fluid is introduced via the coiled tubing unit, work string or the like, it first moves the valving member from its upper position to a lower position. This travel of the valving member from the upper position to the lower position gradually compresses the valve member spring.
- valve member is positioned on the piston to form a seal therewith so that pressurized fluid above the valve member and piston can be used to move the assembly of valve member and piston downwardly to the lowermost position.
- valve member spring when the valve member spring is fully compressed, it then contains sufficient strength to separate the valve member from the piston. Once the valve member and piston are separated, fluid escapes through a piston bore and relieves pressure on the piston. This enables the piston spring to thrust the piston back to the upper position which creates the pumping action that pulls debris from the well bore into the cavity.
- FIG. 1 is a sectional elevational view of the preferred embodiment of the apparatus of the present invention shown in the initial position with the tool operating to circulate fluids, prior to beginning pump operation;
- FIG. 2 is a sectional elevational view of the preferred embodiment of the apparatus of the present invention illustrating the initiation of pump operation wherein the valving member and piston are in a lowermost position;
- FIG. 3 is a sectional elevational view of the preferred embodiment of the apparatus of the present invention illustrating a completion of the pumping cycle wherein the valving member and piston have returned to the initial position;
- FIG. 4 is a sectional elevational view of a second embodiment of the apparatus of the present invention.
- FIG. 5 is a sectional elevational view of the second embodiment of the apparatus of the present invention illustrating the lifting of debris into the tool body;
- FIG. 6 is a sectional elevational view of the second embodiment of the apparatus of the present invention illustrating the movement of debris through the escalating members;
- FIG. 7 is a sectional elevational view of a third embodiment of the apparatus of the present invention.
- FIG. 8 is a sectional view taken along lines 8--8 of FIG. 7;
- FIG. 9 is a sectional view taken along lines 9--9 of FIG. 7;
- FIG. 10 is a sectional view taken along lines 10--10 of FIG. 7.
- FIGS. 1-3 show generally the preferred embodiment of the apparatus of the present invention designated generally by the numeral 10.
- Junk bailer apparatus 10 includes an elongated tool body 11 that can be run in an oil and gas well bore such as in well casing, for example.
- Tool body 11 has an upper end portion 12 and a lower end portion 13.
- the lower end portion 13 provides an open ended intake portion for receiving debris during use.
- the tool body 11 provides a longitudinally extended open ended bore 15 that communicates with the upper and lower end portions 12, 13 and which contains moving parts such as the valving member 20, piston 31, and hinged catch fingers 56, 57.
- Fitting 16 forms a threaded connection 17 with the tool body 11 as shown in FIGS. 1-3.
- Fitting 16 also provides internal threads 18 for attaching the entire assembly of junk bailer apparatus 10 to a coiled tubing unit, drill string, work string, or the like, enabling the apparatus 10 to be lowered into a well bore for removing debris therefrom.
- Fitting 16 provides a flow port 19 so that a coil tubing unit, work string, or the like can communicate with the bore 15 of tool body 11 so that fluids can flow from the earth's surface to the tool body 11 via port 19 and bore 15.
- a valving member 20 is mounted in bore 15 of tool body 11 at upper end portion 12 as shown in FIG. 1.
- Valving member 20 has a lower end portion 21 that defines a ball valving member 22.
- Tool body 11 has an annular shoulder 23 with an opening 24 through which the middle and lower end portions of valving member 20 can pass during use.
- Valving member 20 has an enlarged upper end portion 25 that has shoulders 26 that engage coil spring 28.
- the valving member 20 can be "X" shaped in transverse section, comprising a plurality of preferably four (4) longitudinally extending ribs 27. When the valving member 20 reaches a lowermost position as shown in FIG. 2, spring 28 is compressed and the shoulders 26 prevent further downward movement of valving member 20 in the direction of arrow 60 as shown in FIG. 2.
- Piston 30 also slides within bore 15 of tool body 11.
- Piston 30 has an enlarged diameter upper end portion 31, a smaller diameter middle section 32, and an enlarged lower section 33.
- the piston 30 provides seals at 45 and 46.
- a bushing 34 mounted within the bore 15 of tool body 11 provides a guide for the smaller diameter middle section 32 of piston 30 as shown in FIGS. 1-3.
- Piston 30 provides a longitudinally extending flow channel 35 through which fluids can flow between the upper 31 and lower 33 sections of piston 30.
- arrow 36 illustrates the flow of fluids from bore 15 through flow channel 35 to a pair of diagonal channels 43, 44.
- Diagonal channels 43, 44 communicate with slots 41, 42 in tool body 11 as shown in FIG. 1. This enables fluid to be circulated.
- Enlarged diameter upper end 31 of piston 30 provides a valve seat 37 that communicates with flow channel 35.
- the seat 37 receives ball valve 22 of valving member 20 moving down to engage piston 30.
- Fluid can flow from a coil tubing string or work string through port 19 and to bore 15. This creates a pressure differential that moves valving member 20 downwardly so that the ball valving member 22 engages the seat 37 forming a seal. At this point, pressure differential above piston 30 causes the piston 30 and valving member 20 to move downwardly as a unit. As the valving member 20 and piston 30 move downwardly, both springs 28 and 40 are compressed to a greater and greater degree. Springs 28 and 40 are in a fully compressed position in FIG. 2.
- the spring 28 provides a spring constant that fires the valving member 20 from its sealed position on piston 30 once the spring 28 has become fully compressed as shown in FIG. 2.
- the ball valving member 22 is removed from seat 37 as shown in FIG. 3. This releases the differential pressure above piston 30 and enables spring 40 to thrust the piston 30 upwardly in the direction of arrows 61 as shown in FIG. 3. This upward movement of the piston creates a suction below enlarged lower section 33 of piston 30.
- a cavity 47 is provided within the enlarged lower section 33 of piston 30 for containing ball valving member 48.
- the ball valving member 48 functions as a check valve, being urged against seat 50 with spring 49.
- the check ball valving member 48 comes off of seat 50 to allow the lower fluids to exhaust via slots 41, 42.
- FIGS. 4-10 show a second embodiment of the apparatus of the present invention designated generally by the numeral 10B.
- the embodiment of 10B is shown in use in well tubing T wherein it is in the process of removing debris D that is blocking the well annulus A above an object O to be retrieved.
- the embodiment of FIGS. 4-10 is constructed in accordance with the preferred embodiment of FIGS. 1-3.
- the difference in construction between the embodiment of FIGS. 4-10 and the preferred embodiment of FIGS. 1-3 is the addition of retention magnets 62, magnetic staging points 63, and escalating members 64.
- an escalating tube 65 depends from the lower end of tool body 11 as shown in FIG. 4.
- the escalating tube 65 carries a plurality of escalating members 64 that can, for example, be stiff brush-like members that are inclined and opposed with respect to each other as shown in FIG. 4.
- the escalating members include a pair of opposed sets of escalating members designated generally by the numerals 64A and 64B in FIG. 4.
- Magnetic staging points 63 are shown in FIGS. 4-7 and 10. The magnetic staging points 63 are simply magnetic members attached to housing 11. These magnetic staging points 63 hold debris in place.
- the staging points 63 are exposed to the lower chamber (eg. by a slot in the lower piston.
- the flexible fingers or brushes 64A, 64B move the debris from magnet to magnet of the staging points 63. This occurs in stages until the debris finally reaches the storage area.
- the fingers 64A, 64B urge debris to move upwardly in combination with the pumping action of the apparatus 10B which is the same of the pumping action of the preferred embodiment of FIGS. 1-3.
- the brush-like escalating members 64A, 64B grip and hold the debris D and urge it upwardly. With each stroke of the apparatus 10B, pumping action urges the individual pieces of the debris D upwardly as shown in FIG. 6.
- the escalating tube 65 reciprocates as it is attached to piston 30. Eventually, each element of debris D is held by a magnetic staging point 63. However, the escalating members 64A, 64B in FIG. 6 continue to push debris D upwardly in stages from magnet to magnet and toward the storage area at retention magnets 62. The retention magnets 62 hold elements of debris D at the upper end 66 of escalator tube 65 that is a void storage space area for containing a number of items of debris D at retention magnets 62.
Abstract
Description
______________________________________ Part Number Description ______________________________________ 10junk bailer apparatus 10Bjunk bailer apparatus 11tool body 12upper end portion 13lower end 14intake 15 longitudinal open ended bore 16fitting 17 threadedconnection 18internal threads 19flow port 20valving member 21lower end 22ball valve 23annular shoulder 24opening 25 enlargedupper end 26shoulder 27rib 28coil spring 30piston 31 enlarged diameterupper end 32 smaller diametermiddle section 33 enlargedlower section 34bushing 35flow channel 36arrow 37 seat 38 annular shoulder 39annular surface 40coil spring 41slot 42slot 43diagonal channel 44diagonal channel 45seal 46seal 47cavity 48ball valving member 49spring 50 seat 51 opening 52 opening 53 arrow 54arrow 56 hingedcatch fingers 57 hinged catch fingers 58 arrow 59arrow 60 arrow 61arrow 62retention magnet 63magnetic staging points 64A escalating members 64B escalating members 65escalator tube 66 upper end of tube A well annulus D debris O object to be returned T well tubing ______________________________________
Claims (22)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/900,633 US5944100A (en) | 1997-07-25 | 1997-07-25 | Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well |
AU86647/98A AU8664798A (en) | 1997-07-25 | 1998-07-24 | Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well |
GB0001496A GB2344367A (en) | 1997-07-25 | 1998-07-24 | Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well |
CA002298011A CA2298011A1 (en) | 1997-07-25 | 1998-07-24 | Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well |
PCT/US1998/015551 WO1999005386A2 (en) | 1997-07-25 | 1998-07-24 | Junk bailer for use in retrieving debris from a well |
NO20000342A NO20000342L (en) | 1997-07-25 | 2000-01-24 | Scrap collector device for use in collecting scrap from a wellbore in an oil and gas well |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/900,633 US5944100A (en) | 1997-07-25 | 1997-07-25 | Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well |
Publications (1)
Publication Number | Publication Date |
---|---|
US5944100A true US5944100A (en) | 1999-08-31 |
Family
ID=25412833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/900,633 Expired - Fee Related US5944100A (en) | 1997-07-25 | 1997-07-25 | Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well |
Country Status (6)
Country | Link |
---|---|
US (1) | US5944100A (en) |
AU (1) | AU8664798A (en) |
CA (1) | CA2298011A1 (en) |
GB (1) | GB2344367A (en) |
NO (1) | NO20000342L (en) |
WO (1) | WO1999005386A2 (en) |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6196319B1 (en) * | 1998-10-15 | 2001-03-06 | Western Atlas International, Inc. | Hydraulic sand removal tool |
US20010047866A1 (en) * | 1998-12-07 | 2001-12-06 | Cook Robert Lance | Wellbore casing |
WO2001073262A3 (en) * | 2000-03-27 | 2002-03-21 | Weatherford Lamb | Sand removal and device retrieval tool |
US20020100593A1 (en) * | 1999-02-26 | 2002-08-01 | Shell Oil Co. | Preload for expansion cone |
US20020121372A1 (en) * | 1998-11-16 | 2002-09-05 | Shell Oil Co. | Isolation of subterranean zones |
US6575240B1 (en) | 1998-12-07 | 2003-06-10 | Shell Oil Company | System and method for driving pipe |
US6607031B2 (en) * | 2001-05-03 | 2003-08-19 | Baker Hughes Incorporated | Screened boot basket/filter |
US6634431B2 (en) | 1998-11-16 | 2003-10-21 | Robert Lance Cook | Isolation of subterranean zones |
US6655462B1 (en) | 1999-05-29 | 2003-12-02 | Sps-Afos International Limited | Magnetic well cleaning apparatus |
US6725919B2 (en) | 1998-12-07 | 2004-04-27 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
US6823937B1 (en) | 1998-12-07 | 2004-11-30 | Shell Oil Company | Wellhead |
US20060011346A1 (en) * | 2004-07-15 | 2006-01-19 | Theriot Clayton Sr | Downhole magnetic retrieval tool |
US20060157249A1 (en) * | 2005-01-14 | 2006-07-20 | Reynolds James S | Finger boot basket |
US7174957B1 (en) | 2004-06-08 | 2007-02-13 | Wood Group Esp, Inc. | Magnetic bailer |
US20070102161A1 (en) * | 2005-09-09 | 2007-05-10 | Gazewood Michael J | Magnetic fishing tool and method |
WO2009009456A1 (en) * | 2007-07-06 | 2009-01-15 | Wellbore Energy Solutions, Llc | Multi-purpose well servicing apparatus |
US20090032247A1 (en) * | 2007-08-03 | 2009-02-05 | Davis John P | Eductor Jet Bushing for Downhole Use |
US20090200010A1 (en) * | 2008-02-11 | 2009-08-13 | Baker Hughes Incorporated | Downhole Debris Catcher and Associated Mill |
US7665532B2 (en) | 1998-12-07 | 2010-02-23 | Shell Oil Company | Pipeline |
US7712522B2 (en) | 2003-09-05 | 2010-05-11 | Enventure Global Technology, Llc | Expansion cone and system |
US7740076B2 (en) | 2002-04-12 | 2010-06-22 | Enventure Global Technology, L.L.C. | Protective sleeve for threaded connections for expandable liner hanger |
US7739917B2 (en) | 2002-09-20 | 2010-06-22 | Enventure Global Technology, Llc | Pipe formability evaluation for expandable tubulars |
US7753124B1 (en) * | 2007-03-23 | 2010-07-13 | Penisson Dennis J | Autonomous magnetic sleeve for a riser |
WO2010088168A1 (en) | 2009-01-28 | 2010-08-05 | Borgwarner Inc. | Solenoid actuated hydraulic valve for use in an automatic transmission |
US7775290B2 (en) | 2003-04-17 | 2010-08-17 | Enventure Global Technology, Llc | Apparatus for radially expanding and plastically deforming a tubular member |
US7793721B2 (en) | 2003-03-11 | 2010-09-14 | Eventure Global Technology, Llc | Apparatus for radially expanding and plastically deforming a tubular member |
US7819185B2 (en) | 2004-08-13 | 2010-10-26 | Enventure Global Technology, Llc | Expandable tubular |
US7886831B2 (en) | 2003-01-22 | 2011-02-15 | Enventure Global Technology, L.L.C. | Apparatus for radially expanding and plastically deforming a tubular member |
US7918284B2 (en) | 2002-04-15 | 2011-04-05 | Enventure Global Technology, L.L.C. | Protective sleeve for threaded connections for expandable liner hanger |
WO2011091157A2 (en) | 2010-01-20 | 2011-07-28 | Wellbore Energy Solutions, Llc | Differential pressure wellbore tool and related methods of use |
WO2013013136A1 (en) * | 2011-07-21 | 2013-01-24 | Derouen Mark | Method and apparatus for catching and retrieving objects in a well |
US8651181B2 (en) | 2008-05-12 | 2014-02-18 | Halliburton Energy Services, Inc. | Downhole filter tool |
US8770270B2 (en) | 2010-09-30 | 2014-07-08 | Conocophillips Company | Double string slurry pump |
US20150226036A1 (en) * | 2012-09-20 | 2015-08-13 | M-I L.L.C. | Packer plug retrieval tool and related methods |
US9284807B1 (en) | 2013-02-13 | 2016-03-15 | Douglas T. Beynon | Retrieval tool |
US10208553B2 (en) | 2013-11-05 | 2019-02-19 | Weatherford Technology Holdings, Llc | Magnetic retrieval apparatus |
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US3023810A (en) * | 1957-05-29 | 1962-03-06 | Edwin A Anderson | Junk retriever |
US3203491A (en) * | 1963-02-28 | 1965-08-31 | Gerald O Turley | Fishing tool with magnet and fluid ports |
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US3651867A (en) * | 1970-10-05 | 1972-03-28 | August B Baumstimler | Combination well clean-out tool and jar |
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US4059155A (en) * | 1976-07-19 | 1977-11-22 | International Enterprises, Inc. | Junk basket and method of removing foreign material from a well |
US4462471A (en) * | 1982-10-27 | 1984-07-31 | James Hipp | Bidirectional fluid operated vibratory jar |
US4702325A (en) * | 1984-10-04 | 1987-10-27 | James Hipp | Apparatus and method for driving casing or conductor pipe |
US4958691A (en) * | 1989-06-16 | 1990-09-25 | James Hipp | Fluid operated vibratory jar with rotating bit |
US5156223A (en) * | 1989-06-16 | 1992-10-20 | Hipp James E | Fluid operated vibratory jar with rotating bit |
-
1997
- 1997-07-25 US US08/900,633 patent/US5944100A/en not_active Expired - Fee Related
-
1998
- 1998-07-24 CA CA002298011A patent/CA2298011A1/en not_active Abandoned
- 1998-07-24 WO PCT/US1998/015551 patent/WO1999005386A2/en active Application Filing
- 1998-07-24 GB GB0001496A patent/GB2344367A/en not_active Withdrawn
- 1998-07-24 AU AU86647/98A patent/AU8664798A/en not_active Abandoned
-
2000
- 2000-01-24 NO NO20000342A patent/NO20000342L/en not_active Application Discontinuation
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Cited By (64)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6196319B1 (en) * | 1998-10-15 | 2001-03-06 | Western Atlas International, Inc. | Hydraulic sand removal tool |
US20020121372A1 (en) * | 1998-11-16 | 2002-09-05 | Shell Oil Co. | Isolation of subterranean zones |
US6745845B2 (en) | 1998-11-16 | 2004-06-08 | Shell Oil Company | Isolation of subterranean zones |
US6634431B2 (en) | 1998-11-16 | 2003-10-21 | Robert Lance Cook | Isolation of subterranean zones |
US7665532B2 (en) | 1998-12-07 | 2010-02-23 | Shell Oil Company | Pipeline |
US20010047866A1 (en) * | 1998-12-07 | 2001-12-06 | Cook Robert Lance | Wellbore casing |
US6823937B1 (en) | 1998-12-07 | 2004-11-30 | Shell Oil Company | Wellhead |
US6758278B2 (en) | 1998-12-07 | 2004-07-06 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
US6561227B2 (en) | 1998-12-07 | 2003-05-13 | Shell Oil Company | Wellbore casing |
US6575240B1 (en) | 1998-12-07 | 2003-06-10 | Shell Oil Company | System and method for driving pipe |
US6739392B2 (en) | 1998-12-07 | 2004-05-25 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
US6725919B2 (en) | 1998-12-07 | 2004-04-27 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
US6684947B2 (en) | 1999-02-26 | 2004-02-03 | Shell Oil Company | Apparatus for radially expanding a tubular member |
US6631769B2 (en) | 1999-02-26 | 2003-10-14 | Shell Oil Company | Method of operating an apparatus for radially expanding a tubular member |
US20020100593A1 (en) * | 1999-02-26 | 2002-08-01 | Shell Oil Co. | Preload for expansion cone |
US6705395B2 (en) | 1999-02-26 | 2004-03-16 | Shell Oil Company | Wellbore casing |
US6631759B2 (en) | 1999-02-26 | 2003-10-14 | Shell Oil Company | Apparatus for radially expanding a tubular member |
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Also Published As
Publication number | Publication date |
---|---|
CA2298011A1 (en) | 1999-02-04 |
WO1999005386A3 (en) | 1999-04-15 |
GB0001496D0 (en) | 2000-03-15 |
WO1999005386A2 (en) | 1999-02-04 |
NO20000342L (en) | 2000-03-22 |
GB2344367A (en) | 2000-06-07 |
NO20000342D0 (en) | 2000-01-24 |
AU8664798A (en) | 1999-02-16 |
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